.a1{ width:300px; height:100%;; background-color:#6633FF; float:left;}
.a2{ width:160px; height:30px; float:left; margin-left:40px; font-size:30px;}
.a3{ width:300px; height:130px; float:left;}
.a4{ width:300px; height:150px; float:left;}
.a5{ width:300px; height:150px; float:left;}
.a6{ width:300px; height:150px; float:left;}
#aa{ display:none;}